Where does “hřiešný” come from?

hřiešný (Old Czech) comes from Proto-Slavic grěšьnъ, from Proto-Slavic grěxъ — sin.

Ancestry of “hřiešný”, step by step

Step	Language	Word	Meaning
1	Proto-Slavic	grěšьnъ	wrong, erroneous
2	Proto-Slavic	grěxъ	sin

Words derived from “hřiešný”

hříšný

Every word from Proto-Slavic grěxъ →Every word from Proto-Slavic grěšьnъ →